pycnometer

简明释义

英[pɪkˈnɒmɪtə(r)]美[pɪkˈnɑːmətər]

n. 比重瓶

英英释义

单词用法

同义词

反义词

例句

1.The pore structure of EG was measured by nitrogen adsorption and mercury porosimeter methods. The space around EG particle was observed by SEM and the porosity of EG was measured by pycnometer method.

用氮气吸附法和压汞法测量膨胀石墨（EG）的孔结构，用SEM观察EG颗粒间的孔隙结构和EG的孔隙率。

2.The pore structure of EG was measured by nitrogen adsorption and mercury porosimeter methods. The space around EG particle was observed by SEM and the porosity of EG was measured by pycnometer method.

用氮气吸附法和压汞法测量膨胀石墨（EG）的孔结构，用SEM观察EG颗粒间的孔隙结构和EG的孔隙率。

3.Three conventional methods for measurement of petroleum density are described in the present paper. They are pycnometer method, hydrometer method and digital densimeter method.

本文介绍了三种测定石油密度的方法，传统的密度计法和密度瓶法及现代的数字密度计法。

4.The pycnometer is an essential tool in materials science for analyzing the properties of solids.

比重计是材料科学中分析固体特性的基本工具。

5.In our chemistry lab, we utilize a pycnometer for determining the specific gravity of various solutions.

在我们的化学实验室中，我们利用比重计来确定各种溶液的比重。

6.After filling the pycnometer with water, we recorded the volume to calculate the density of the sample.

在用水填充比重计后，我们记录了体积以计算样品的密度。

7.The scientist used a pycnometer to measure the density of the new liquid compound.

科学家使用比重计来测量新液体化合物的密度。

8.To ensure accurate results, the pycnometer must be calibrated before each use.

为了确保结果准确，比重计在每次使用前必须校准。

作文

In the field of chemistry and material science, precise measurements are crucial for experiments and research. One important instrument used for measuring the density of liquids and solids is the pycnometer (比重计). This device allows scientists to determine the mass of a substance relative to its volume, which is essential in understanding various properties of materials. The pycnometer typically consists of a glass or metal container with a precisely measured volume. It is often used in laboratories to achieve accurate results when studying the density of different substances.The operation of a pycnometer is relatively straightforward. First, the empty pycnometer is weighed using a balance to obtain its tare weight. Next, the substance to be measured is added to the pycnometer until it reaches the marked volume. After sealing the pycnometer, the total weight is measured again. By subtracting the tare weight from this new weight, researchers can find the mass of the liquid or solid contained within the pycnometer. To calculate the density, the mass is divided by the volume of the pycnometer, which is known from its design.One of the key advantages of using a pycnometer is its ability to provide highly accurate density measurements. This accuracy is vital in many applications, including quality control in manufacturing processes, formulation of chemical products, and even in food science where the density of ingredients can affect the final product. For instance, when developing a new beverage, the density of each ingredient must be carefully measured to ensure consistency in taste and texture.Moreover, the pycnometer can also be used to measure the density of gases, although this requires additional considerations and modifications to the standard device. In such cases, the pycnometer must be equipped with a gas-tight seal and may need to be calibrated differently than when measuring liquids. This versatility makes the pycnometer a valuable tool in both academic research and industrial applications.Another aspect to consider is the importance of temperature control during the measurement process. Density can vary significantly with changes in temperature, so it is essential to conduct measurements at a consistent temperature for accurate results. Many modern pycnometers come with built-in temperature controls or are designed to be used in temperature-regulated environments.In conclusion, the pycnometer (比重计) is an indispensable instrument in the realm of scientific research and quality assurance. Its ability to provide precise measurements of density plays a critical role in various fields, from chemistry to food science. Understanding how to properly use and interpret the results from a pycnometer can greatly enhance the reliability of experimental data and contribute to advancements in technology and industry. As we continue to explore new materials and substances, the pycnometer will remain a fundamental tool in our scientific toolkit.

在化学和材料科学领域，精确的测量对于实验和研究至关重要。用于测量液体和固体密度的重要仪器之一是比重计（pycnometer）。该设备允许科学家确定物质相对于其体积的质量，这对于理解材料的各种属性至关重要。比重计通常由一个玻璃或金属容器组成，具有精确测量的体积。它常用于实验室，以在研究不同物质的密度时获得准确的结果。比重计的操作相对简单。首先，使用天平称量空的比重计以获得其皮重。接下来，将要测量的物质添加到比重计中，直到达到标记的体积。在密封比重计后，再次测量总重量。通过从这个新重量中减去皮重，研究人员可以找到包含在比重计中的液体或固体的质量。要计算密度，将质量除以比重计的体积，这个体积是根据其设计已知的。使用比重计的一个主要优点是它能够提供高度准确的密度测量。这种准确性在许多应用中至关重要，包括制造过程中的质量控制、化学产品的配方，甚至在食品科学中，成分的密度会影响最终产品。例如，在开发新饮料时，每种成分的密度必须仔细测量，以确保味道和质地的一致性。此外，比重计也可以用于测量气体的密度，尽管这需要额外的考虑和对标准设备的修改。在这种情况下，比重计必须配备气密密封，并且可能需要与测量液体时不同的校准。这种多功能性使得比重计成为学术研究和工业应用中的宝贵工具。另一个需要考虑的方面是测量过程中温度控制的重要性。密度会随着温度变化而显著变化，因此在一致的温度下进行测量对于获得准确结果至关重要。许多现代比重计配有内置温度控制装置，或设计用于在温度调节的环境中使用。总之，比重计（pycnometer）是科学研究和质量保证领域不可或缺的仪器。它提供精确的密度测量能力，在化学到食品科学等各个领域发挥着关键作用。了解如何正确使用比重计并解释其结果，可以大大增强实验数据的可靠性，并促进技术和工业的发展。随着我们继续探索新材料和物质，比重计将继续作为我们科学工具箱中的基本工具。